So what I would do if I was you. - first check if you have on or off cooldown so type wh_pl_randomeventscooldonwsenabled just to see your default settings.
(I think I had it on 1 by default and so you should have. I had the encounters I basically increase them by typing 1 to basechancerunoffset.)
Then debug -
wh_pl_random eventsdebug 1 and switch to 0 right after that (why leave it on 1 for debug right?)
then wh_pl_randomeventbasechancerunoffset 1 or 0 ( the whole option is -1/0/1)
I set it to 1 so the amount of encounters increase -1 is probably decrease a lot